False sugar sequence phenomenon and structural analysis of alpha-hederin and hederacoside c through electrospray ionization and multi-stage tandem mass spectrometry

Saponins are glycosides regularly found in plants, and they are frequently analyzed by means of electrospray ion sources and tandem mass spectrometry (ESI/MSn), not only to obtain an overall molecular weight through the high sensitivity of mass spectrometry but also to obtain their structural inform...